1/* 2 * volume_id - reads filesystem label and uuid 3 * 4 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20//config:### config FEATURE_VOLUMEID_PROMISERAID 21//config:### bool "promise raid" 22//config:### default y 23//config:### depends on VOLUMEID 24 25//kbuild:### lib-$(CONFIG_FEATURE_VOLUMEID_PROMISERAID) += promise_raid.o 26 27#include "volume_id_internal.h" 28 29struct promise_meta { 30 uint8_t sig[24]; 31} PACKED; 32 33#define PDC_CONFIG_OFF 0x1200 34#define PDC_SIGNATURE "Promise Technology, Inc." 35 36int FAST_FUNC volume_id_probe_promise_fasttrack_raid(struct volume_id *id, uint64_t off, uint64_t size) 37{ 38 static const unsigned short sectors[] = { 39 63, 255, 256, 16, 399 40 }; 41 42 struct promise_meta *pdc; 43 unsigned i; 44 45 dbg("probing at offset 0x%llx, size 0x%llx", 46 (unsigned long long) off, (unsigned long long) size); 47 48 if (size < 0x40000) 49 return -1; 50 51 for (i = 0; i < ARRAY_SIZE(sectors); i++) { 52 uint64_t meta_off; 53 54 meta_off = ((size / 0x200) - sectors[i]) * 0x200; 55 pdc = volume_id_get_buffer(id, off + meta_off, 0x200); 56 if (pdc == NULL) 57 return -1; 58 59 if (memcmp(pdc->sig, PDC_SIGNATURE, sizeof(PDC_SIGNATURE)-1) == 0) 60 goto found; 61 } 62 return -1; 63 64 found: 65// volume_id_set_usage(id, VOLUME_ID_RAID); 66// id->type = "promise_fasttrack_raid_member"; 67 68 return 0; 69} 70